Airbnb, Uber and Lyft are three major players in the booming “sharing economy.” Senator Mark Warner joins us as we explore the growth of these companies and new questions being raised about their safety, fair pricing, and taxation. We'll talk with a Richmond-based Uber driver about his at-times-harrowing experiences behind the wheel with the ridesharing company, and hear from a D.C.-based Airbnb host about how the service is helping him enjoy his vacation property.